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Thermodynamic properties of nonideal plasmas with multiple ionization and Coulomb and hard-core interactions

Published online by Cambridge University Press:  09 March 2009

Torsten Kahlbaum  and
Andreas Förster
Torsten Kahlbaum
Affiliation:
Zentralinstitut für Elektronenphysik, Hausvogteiplatz 5-7, Berlin, D-1086, Federal Republic of Germany
Andreas Förster
Affiliation:
Fachbereich Physik, Humboldt-Universität zu Berlin, Invalidenstrasse 42, Berlin, D-1040, Federal Republic of Germany
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Abstract

We present a theoretical approach to the thermodynamic properties of nonideal plasmas consisting of neutral atoms, multiply charged ions, and free electrons. Starting with the free energy, we describe the ionization equilibrium of this system by a coupled set of mass action laws (Saha equations). Our model of interaction takes into account Coulomb forces between all charged particles and hard-core forces between all heavy particles and the electrons. The influence of multiple ionization and different interaction parts on plasma composition, mean charge, and equation of state is discussed for xenon. Finally, we show the potential occurrence of the plasma phase transition.

Type
Research Article
Information
Laser and Particle Beams , Volume 8 , Issue 4 , December 1990 , pp. 753 - 762
Copyright
Copyright © Cambridge University Press 1990

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